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import PaletteProvider from "bpmn-js/lib/features/palette/PaletteProvider";
import { assign } from "min-dash";
export default function CustomPalette(palette, create, elementFactory, spaceTool, lassoTool, handTool, globalConnect, translate) {
PaletteProvider.call(this, palette, create, elementFactory, spaceTool, lassoTool, handTool, globalConnect, translate, 2000);
}
const F = function() {}; // 核心，利用空对象作为中介；
F.prototype = PaletteProvider.prototype; // 核心，将父类的原型赋值给空对象F；
// 利用中介函数重写原型链方法
F.prototype.getPaletteEntries = function() {
const actions = {},
create = this._create,
elementFactory = this._elementFactory,
spaceTool = this._spaceTool,
lassoTool = this._lassoTool,
handTool = this._handTool,
globalConnect = this._globalConnect,
translate = this._translate
function createAction(type, group, className, title, options) {
function createListener(event) {
const shape = elementFactory.createShape(assign({ type: type }, options))
if (options) {
shape.businessObject.di.isExpanded = options.isExpanded;
}
create.start(event, shape);
}
const shortType = type.replace(/^bpmn:/, '')
return {
group: group,
className: className,
title: title || translate("Create {type}", { type: shortType }),
action: {
dragstart: createListener,
click: createListener
}
};
}
function createSubprocess(event) {
const subProcess = elementFactory.createShape({
type: 'bpmn:SubProcess',
x: 0,
y: 0,
isExpanded: true
})
const startEvent = elementFactory.createShape({
type: 'bpmn:StartEvent',
x: 40,
y: 82,
parent: subProcess
})
create.start(event, [subProcess, startEvent], {
hints: {
autoSelect: [startEvent]
}
});
}
function createParticipant(event) {
create.start(event, elementFactory.createParticipantShape());
}
assign(actions, {
"hand-tool": {
group: "tools",
className: "bpmn-icon-hand-tool",
title: translate("Activate the hand tool"),
action: {
click: function(event) {
handTool.activateHand(event);
}
}
},
"lasso-tool": {
group: "tools",
className: "bpmn-icon-lasso-tool",
title: translate("Activate the lasso tool"),
action: {
click: function(event) {
lassoTool.activateSelection(event);
}
}
},
"space-tool": {
group: "tools",
className: "bpmn-icon-space-tool",
title: translate("Activate the create/remove space tool"),
action: {
click: function(event) {
spaceTool.activateSelection(event);
}
}
},
"global-connect-tool": {
group: "tools",
className: "bpmn-icon-connection-multi",
title: translate("Activate the global connect tool"),
action: {
click: function(event) {
globalConnect.toggle(event);
}
}
},
"tool-separator": {
group: "tools",
separator: true
},
"create.start-event": createAction("bpmn:StartEvent", "event", "bpmn-icon-start-event-none", translate("Create StartEvent")),
"create.intermediate-event": createAction(
"bpmn:IntermediateThrowEvent",
"event",
"bpmn-icon-intermediate-event-none",
translate("Create Intermediate/Boundary Event")
),
"create.end-event": createAction("bpmn:EndEvent", "event", "bpmn-icon-end-event-none", translate("Create EndEvent")),
"create.exclusive-gateway": createAction("bpmn:ExclusiveGateway", "gateway", "bpmn-icon-gateway-none", translate("Create Gateway")),
"create.user-task": createAction("bpmn:UserTask", "activity", "bpmn-icon-user-task", translate("Create User Task")),
"create.data-object": createAction("bpmn:DataObjectReference", "data-object", "bpmn-icon-data-object", translate("Create DataObjectReference")),
"create.data-store": createAction("bpmn:DataStoreReference", "data-store", "bpmn-icon-data-store", translate("Create DataStoreReference")),
"create.subprocess-expanded": {
group: "activity",
className: "bpmn-icon-subprocess-expanded",
title: translate("Create expanded SubProcess"),
action: {
dragstart: createSubprocess,
click: createSubprocess
}
},
"create.participant-expanded": {
group: "collaboration",
className: "bpmn-icon-participant",
title: translate("Create Pool/Participant"),
action: {
dragstart: createParticipant,
click: createParticipant
}
},
"create.group": createAction("bpmn:Group", "artifact", "bpmn-icon-group", translate("Create Group"))
});
return actions;
};
CustomPalette.$inject = ["palette", "create", "elementFactory", "spaceTool", "lassoTool", "handTool", "globalConnect", "translate"];
CustomPalette.prototype = new F(); // 核心，将 F的实例赋值给子类；
CustomPalette.prototype.constructor = CustomPalette; // 修复子类CustomPalette的构造器指向，防止原型链的混乱；